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Zeile 17: |
| * 802.11-Frame = DIFS + long_preamble + TCP + long_preamble + 802.11ack + SIFS | | * 802.11-Frame = DIFS + long_preamble + TCP + long_preamble + 802.11ack + SIFS |
| * TCP_HEADER/DATA bei MTU 1500 = 1460 Bytes + 40 Bytes Header + 28 Bytes Control/Management + 8 SNAP = 1536 Bytes | | * TCP_HEADER/DATA bei MTU 1500 = 1460 Bytes + 40 Bytes Header + 28 Bytes Control/Management + 8 SNAP = 1536 Bytes |
− | * TCP_HEADER/ACK = 40 + 36 = 76 Bytes | + | * TCP_HEADER/ACK = 40 Bytes Header + 28 Bytes Control/Management + 8 SNAP = 76 Bytes |
| + | |
| ** 1mbit: | | ** 1mbit: |
| *** preamble long/short: 192 / 96 µs | | *** preamble long/short: 192 / 96 µs |
| *** 802.11ack = 14 Bytes | | *** 802.11ack = 14 Bytes |
| *** 8 Bit / Symbol -> 1375000 Symbole / 11 / Sekunde = 125000 Symbole/s | | *** 8 Bit / Symbol -> 1375000 Symbole / 11 / Sekunde = 125000 Symbole/s |
− | *** SIFS = 10 µs | + | *** SIFS / SLOT / DIFS = 10 µs / 20 µs / 2 x SLOT + SIFS = 50 µs |
− | *** SLOT = 20 µs
| |
− | *** DIFS = 2 x SLOT + SIFS = 50 µs
| |
| *** 802.11-Frame = DIFS + long_preamble + TCP + long_preamble + 802.11ack + SIFS | | *** 802.11-Frame = DIFS + long_preamble + TCP + long_preamble + 802.11ack + SIFS |
− | *** TCP-DATA = DIFS + long_preamble + TCP_HEADER/DATA + long_preamble + 802.11ack + SIFS | + | *** TCP-DATA: |
| + | **** = DIFS + long_preamble + TCP_HEADER/DATA + long_preamble + 802.11ack + SIFS |
| **** = 50 + 192 + (1536/1,375*11)=12288 + 192 + (14/1,375*11)=112 + 10 = 12844 µs | | **** = 50 + 192 + (1536/1,375*11)=12288 + 192 + (14/1,375*11)=112 + 10 = 12844 µs |
− | *** TCP-ACK = DIFS + long_preamble + TCP_HEADER/ACK + long_preamble + 802.11ack + SIFS | + | *** TCP-ACK: |
| + | **** = DIFS + long_preamble + TCP_HEADER/ACK + long_preamble + 802.11ack + SIFS |
| **** = 50 + 192 + (76/1,375*11)=608 + 192 + (14/1,375*11)=112 + 10 = 1164 µs | | **** = 50 + 192 + (76/1,375*11)=608 + 192 + (14/1,375*11)=112 + 10 = 1164 µs |
− | *** ALL = 12844 + 1164 = 14008 => 71,3/s * 1460 = 104226 Bytes/s = 6,25 MB/min | + | *** ALL: |
| + | **** = 12844 + 1164 = 14008 => 71,3/s * 1460 Bytes = 104226 Bytes/s = 6,25 mB/min = 375,2 mB/h |
| + | *** 1mbit, Fragmentierung 256 |
| + | *** TCP-DATA: |
| + | **** = 50 + 192 + (256/1,375*11)=2048 + 192 + (14/1,375*11)=112 + 10 = 2604 |
| + | *** ALL: |
| + | **** = 2604 + 1164 = 3768 => 265,4/s * 256 Bytes = 67940 Bytes/s = 4,08 mB/min = 244,6 mB/h |
| + | |
| ** 6mbit: | | ** 6mbit: |
| ** 12mbit: | | ** 12mbit: |